And tonight we also have new video of the rough landing at new york's laguardia airport, the passenger jet scraping the tarmac. Reporter: Tonight, this exclusive video from inside the boeing 737 captures the moment of impact. Passengers unaware that this was about to happen. At speeds of at least 126 miles per hour, the southwest flight's landing gear failing at la guardia. Watch again, listen as the plane slams into the runway. As sparks fly outside, chaos inside. "Stay in your seats." "Oh my god." Reporter: Flit attendants trying to calm those on board still in their seats. "There's smoke here!" Hold on. Remain seated. Hold on." Reporter: The 150 on board evacuated the plane through the emergency exits. Nine were treated for minor injuries. The whole plain went down very quickly. Reporter: The ntsb says the plane collapsed violently upon landing. Something failed in that nose gear. Scraping the runway for more than 2,000 feet. The best thing to do is keep that airplane on the ground and do your best so it doesn't veer off left or right. Reporter: The answer may be in the flight recorders delivered today to the ntsb headquarters in washington d.C. This two weeks after a terrifying runway crash, the asiana flight landing in san francisco, three people died, nearly 200 injured. In new york crews toed away the plane as the ntsb launches a full scale investigation. Keep in mind this is the shortest runway in new york, making that hard landing scarier. Southwest says it will refund those passenger's tickets and give them two free flights. Tonight pope francis is in

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